Repurchase Agreements (Details) - USD ($)	Mar. 31, 2016	Dec. 31, 2015
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Carrying Amount	$ 13,122	$ 11,974
U. S. federal agency obligations [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Carrying Amount	5,660	5,810
Agency mortgage-backed securities [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Carrying Amount	7,462	6,164
Maturity Overnight [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Carrying Amount	13,122	11,974
Maturity Overnight [Member] | U. S. federal agency obligations [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Carrying Amount	5,660	5,810
Maturity Overnight [Member] | Agency mortgage-backed securities [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Carrying Amount	7,462	6,164
Maturity Up to 30 Days [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Carrying Amount	0	0
Maturity Up to 30 Days [Member] | U. S. federal agency obligations [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Carrying Amount	0	0
Maturity Up to 30 Days [Member] | Agency mortgage-backed securities [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Carrying Amount	0	0
Maturity 30 to 90 Days [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Carrying Amount	0	0
Maturity 30 to 90 Days [Member] | U. S. federal agency obligations [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Carrying Amount	0	0
Maturity 30 to 90 Days [Member] | Agency mortgage-backed securities [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Carrying Amount	0	0
Maturity Greater than 90 Days [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Carrying Amount	0	0
Maturity Greater than 90 Days [Member] | U. S. federal agency obligations [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Carrying Amount	0	0
Maturity Greater than 90 Days [Member] | Agency mortgage-backed securities [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Assets Sold under Agreements to Repurchase, Carrying Amount	$ 0	$ 0